Using the GearWrench 84652N is a breeze. First, connect the extension to your impact wrench using the pin and o - ring through the pin hole on the drive end. Then, attach the socket to the extension with the slide locking mechanism. When using it, make sure the connection is tight to avoid any accidents. As for maintenance, keep it clean after each use. The manganese phosphate coating helps resist corrosion, but it's still a good idea to store it in a dry place. If you notice any damage or wear, replace the extension to ensure safety and performance.